Home / 99,648,970.20-149,473,455.30-90,720,761.40

Finding the Fourth Proportional to 99,648,970.20, 149,473,455.30 and 90,720,761.40

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Solution

The fourth proportional to 99,648,970.20, 149,473,455.30 and 90,720,761.40 is: 136,081,142.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,648,970.20 : 149,473,455.30 = 90,720,761.40 : x
  2. Step 2: Convert to fraction form
    99,648,970.20/149,473,455.30 = 90,720,761.40/x
  3. Step 3: Cross multiply
    99,648,970.20x = 149,473,455.30 × 90,720,761.40
  4. Step 4: Simplify right side
    99,648,970.20x = 13,560,345,673,904,868
  5. Step 5: Solve for x
    x = 13,560,345,673,904,868/99,648,970.20
  6. Step 6: Final answer
    x = 136,081,142.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.